Sewing – Special machines – Darning
Patent
1989-07-13
1991-03-19
Schroeder, Werner H.
Sewing
Special machines
Darning
11212115, 1122651, D05B 2100
Patent
active
050001035
ABSTRACT:
A sewing-material holder for an automatic sewing machine and its method of operation. Two or more sewing-material parts to be sewn, once they have been aligned, can be reliably clamped together and not inadvertently displaced when they are clamped. The upper plate of the sewing-material holder closes over the lower plate by first swinging about an axis of rotation and then lowering vertically. The upper plate of the sewing-material holder is thereby lowered into a position where it contacts a large area of the workpiece which has been placed and aligned on the lower plate, so that uniform clamping takes place instantaneously. The sewing-material holder is advantageously adaptable to being closed automatically, and furthermore is easier to operate even if this is done non-automatically, so that the throughput times are shortened.
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Kochs Adler Aktiengesellschaft
Lewis Paul C.
Schroeder Werner H.
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